Question

решите уравнение:
1/3х-1=1/4(х+4/5)

Answer 1

$frac{1}{3} x - 1 = frac{1}{4} (x + frac{4}{5} ) \ frac{1}{3}x - 1 = frac{1}{4} x + frac{1}{5} \ frac{20}{60} x - frac{60}{60} = frac{15}{60} x + frac{12}{60} \ 20x - 15x = 12 + 60 \ 5x = 72 \ x = frac{72}{5} = 14.4$